General National Id France_02 Site name Bezannes, near Reims Light or indepth? Light RBD code FRH Transboundary 0 Data provider Elia Desmot, OIEau Source(s) Green potential of a constructed wetland with reed bed filters on a 172 ha urban project near Reims (France). Project evolution analysis Potentiel écologique d’un ouvrage de rétention et de filtration des eaux pluviales sur une opération de 172 hectares (Reims) ; analyse de la genèse du projet NWRM(s) implemented in the case study Retention Ponds Wetland restoration and management Longitude 3.989 Latitude 49.222 Site information Climate zone cool temperate moist Mean rainfall 618 Mean rainfall unit mm/year Average temperature 10 Type Modelled/Simulated Example Monitoring maintenance Monitoring impacts effects 0 Performance Performance impact estimation method Unknown Design & implementations Application scale City Performance timescale < 1 year Area (ha) 72 Design capacity description 15000m3 Constraints At the beginning of the project, the storage was going to be a concrete water tank. A whole procedure of re-thinking had to be done. Favourable preconditions The idea to change from concrete to natural water retention was supported by WFD conditions and the city management. Design contractual arrangement Arrangement type Responsibility Role Comments Name Design consultation activity Activity stage Key issues Name Comments Design land use change Land use change type Design authority Authority type Role Responsibility Name Comments Lessons, risks, implications... Success factor(s) Success factor type Success factor role Comments Financing Financing type Comments Barrier Barrier type Barrier role Comments Driver Driver type Driver role Comments Financing share Financing share type Share Comments Policy, general governance and design targets Policy description Bezannes needed an area to store water from runoff to protect a new urban zone. Policy target Target purpose Increase Water Storage Runoff control Improved Biodiversity Oher Societal Benefits Policy pressure Pressure directive Relevant pressure Policy area Policy area type Policy area focus Name Comments Policy impact Impact directive Relevant impact Policy wider plan Wider plan type Wider plan focus Name Comments Policy requirement directive Requirement directive Specification Socio-economic Ecosystem improved biodiversity 1 Information on Ecosystem improved biodiversity No biodiversity involved Ecosystem provisioning services 1 Information on Ecosystem provisioning services Amenity space, improvement of water quality, increased water storage Ecosystem impact climate regulation No specific impact Information on Ecosystem impact climate regulation Not mentioned Biophysical impacts Information on retained water 15000m3 capacity in a constructed wetland Water quality overall improvements N/A info Information on Water quality overall improvements The wetland may have a beneficial effect on water quality Soil quality overall soil improvements N/A info Information on Soil quality overall soil improvements Biodiversity enhanced Full Context Pathway(aka Context) Default view Area(aka Level or Site) ALL